Refine code to make it more safely.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15598 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c

@@ -4339,6 +4339,7 @@ HiiConfigRoutingRouteConfig (
                                );
     }
     if (EFI_ERROR (Status)) {
+      ASSERT (AccessProgress != NULL);
       //
       // AccessProgress indicates the parsing progress on <ConfigResp>.
       // Map it to the progress on <MultiConfigResp> then return it.